Marcel Perrignon is a worker who works in a factory in the Paris suburbs. He plans to buy the old bike of his friend Alfred, but the craft is very tired and Alfred, annoyed, decided not to sell him.

His wife Paulette then falls on an advert for an American car sold for a paltry $ 500 F.Marcel went to Neuilly at Madame Lucanzas which, in revenge for infidelity of her late husband, decided to sell low his precious car.But this bargain will be the cause of many setbacks for Marcel …